linux-toradex.git/arch/x86/mm/Makefile, branch v3.4-rc2

memblock, x86: Replace memblock_x86_reserve/free_range() with generic ones

2011-07-14T18:47:53+00:00

Other than sanity check and debug message, the x86 specific version of
memblock reserve/free functions are simple wrappers around the generic
versions - memblock_reserve/free().

This patch adds debug messages with caller identification to the
generic versions and replaces x86 specific ones and kills them.
arch/x86/include/asm/memblock.h and arch/x86/mm/memblock.c are empty
after this change and removed.

Signed-off-by: Tejun Heo 
Link: http://lkml.kernel.org/r/1310462166-31469-14-git-send-email-tj@kernel.org
Cc: Yinghai Lu 
Cc: Benjamin Herrenschmidt 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: "H. Peter Anvin" 
Signed-off-by: H. Peter Anvin

x86, NUMA: Rename amdtopology_64.c to amdtopology.c

2011-05-02T15:24:48+00:00

amdtopology is going to be used by 32bit too drop _64 suffix.  This is
pure rename.

Signed-off-by: Tejun Heo 
Cc: Ingo Molnar 
Cc: Yinghai Lu 
Cc: David Rientjes 
Cc: Thomas Gleixner 
Cc: "H. Peter Anvin"

x86-32, NUMA: Replace srat_32.c with srat.c

2011-05-02T12:18:53+00:00

SRAT support implementation in srat_32.c and srat.c are generally
similar; however, there are some differences.

First of all, 64bit implementation supports more types of SRAT
entries.  64bit supports x2apic, affinity, memory and SLIT.  32bit
only supports processor and memory.

Most other differences stem from different initialization protocols
employed by 64bit and 32bit NUMA init paths.

On 64bit,

* Mappings among PXM, node and apicid are directly done in each SRAT
  entry callback.

* Memory affinity information is passed to numa_add_memblk() which
  takes care of all interfacing with NUMA init.

* Doesn't directly initialize NUMA configurations.  All the
  information is recorded in numa_nodes_parsed and memblks.

On 32bit,

* Checks numa_off.

* Things go through one more level of indirection via private tables
  but eventually end up initializing the same mappings.

* node_start/end_pfn[] are initialized and
  memblock_x86_register_active_regions() is called for each memory
  chunk.

* node_set_online() is called for each online node.

* sort_node_map() is called.

There are also other minor differences in sanity checking and messages
but taking 64bit version should be good enough.

This patch drops the 32bit specific implementation and makes the 64bit
implementation common for both 32 and 64bit.

The init protocol differences are dealt with in two places - the
numa_add_memblk() shim added in the previous patch and new temporary
numa_32.c:get_memcfg_from_srat() which wraps invocation of
x86_acpi_numa_init().

The shim numa_add_memblk() handles the folowings.

* node_start/end_pfn[] initialization.

* node_set_online() for memory nodes.

* Invocation of memblock_x86_register_active_regions().

The shim get_memcfg_from_srat() handles the followings.

* numa_off check.

* node_set_online() for CPU nodes.

* sort_node_map() invocation.

* Clearing of numa_nodes_parsed and active_ranges on failure.

The shims are temporary and will be removed as the generic NUMA init
path in 32bit is replaced with 64bit one.

Signed-off-by: Tejun Heo 
Cc: Ingo Molnar 
Cc: Yinghai Lu 
Cc: David Rientjes 
Cc: Thomas Gleixner 
Cc: "H. Peter Anvin"

x86, NUMA: rename srat_64.c to srat.c

2011-05-02T12:18:52+00:00

Rename srat_64.c to srat.c.  This is to prepare for unification of
NUMA init paths between 32 and 64bit.

Signed-off-by: Tejun Heo 
Cc: Ingo Molnar 
Cc: Yinghai Lu 
Cc: David Rientjes 
Cc: Thomas Gleixner 
Cc: "H. Peter Anvin"

x86-64, NUMA: Move NUMA emulation into numa_emulation.c

2011-02-22T10:10:08+00:00

Create numa_emulation.c and move all NUMA emulation code there.  The
definitions of struct numa_memblk and numa_meminfo are moved to
numa_64.h.  Also, numa_remove_memblk_from(), numa_cleanup_meminfo(),
numa_reset_distance() along with numa_emulation() are made global.

- v2: Internal declarations moved to numa_internal.h as suggested by
      Yinghai.

Signed-off-by: Tejun Heo 
Acked-by: Yinghai Lu 
Cc: Ingo Molnar

x86, amd-nb: Complete the rename of AMD NB and related code

2010-11-18T14:53:04+00:00

Not only the naming of the files was confusing, it was even more so for
the function and variable names.

Renamed the K8 NB and NUMA stuff that is also used on other AMD
platforms. This also renames the CONFIG_K8_NUMA option to
CONFIG_AMD_NUMA and the related file k8topology_64.c to
amdtopology_64.c. No functional changes intended.

Signed-off-by: Hans Rosenfeld 
Signed-off-by: Borislav Petkov

x86, memblock: Add memblock_x86_find_in_range_size()

2010-08-27T18:08:06+00:00

size is returned according free range.
Will be used to find free ranges for early_memtest and memory corruption check

Do not mess it up with lib/memblock.c yet.

Signed-off-by: Yinghai Lu 
Signed-off-by: H. Peter Anvin

x86, pat: Migrate to rbtree only backend for pat memtype management

2010-02-18T23:41:36+00:00

Move pat backend to fully rbtree based implementation from the existing
rbtree and linked list hybrid.

New rbtree based solution uses interval trees (augmented rbtrees) in
order to store the PAT ranges. The new code seprates out the pat backend
to pat_rbtree.c file, making is cleaner. The change also makes the PAT
lookup, reserve and free operations more optimal, as we don't have to
traverse linear linked list of few tens of entries in normal case.

Signed-off-by: Venkatesh Pallipadi 
LKML-Reference: <20100210232607.GB11465@linux-os.sc.intel.com>
Signed-off-by: Suresh Siddha 
Signed-off-by: H. Peter Anvin

x86: split NX setup into separate file to limit unstack-protected code

2009-09-21T20:56:58+00:00

Move the NX setup into a separate file so that it can be compiled
without stack-protection while leaving the rest of the mm/init code
protected.

Signed-off-by: Jeremy Fitzhardinge

xen: check EFER for NX before setting up GDT mapping

2009-09-21T20:49:43+00:00

x86-64 assumes NX is available by default, so we need to
explicitly check for it before using NX.  Some first-generation
Intel x86-64 processors didn't support NX, and even recent systems
allow it to be disabled in BIOS.

[ Impact: prevent Xen crash on NX-less 64-bit machines ]

Signed-off-by: Jeremy Fitzhardinge 
Cc: Stable Kernel